How often should the fluids be changed for low mile use (5,000 mi per yr.?)

What is your question?

PT Turbo Limited edition purchased for granddaughter last week with 19,071 orig. one owner miles. (backed up by Carfax.) Because of future low miles less than 5,000 per yr. Time wise when should the following be flushed due to age not mileage: coolant? brake fluid? power steering fluid? transaxle (Automatic ATF and or filter)?